move Connection interface to api/database, and edgejob type definitions to api/dataservices/edgejobs to reduce the number of deps on portainer., and make deps on specific structures more obvious

Signed-off-by: Sven Dowideit <sven.dowideit@portainer.io>

api/dataservices/stack/stack.go

@@ -2,6 +2,7 @@ package stack
 
 import (
 	"fmt"
+	"github.com/portainer/portainer/api/database"
 	"strings"
 
 	"github.com/sirupsen/logrus"
@@ -17,7 +18,7 @@ const (
 
 // Service represents a service for managing environment(endpoint) data.
 type Service struct {
-	connection portainer.Connection
+	connection database.Connection
 }
 
 func (service *Service) BucketName() string {
@@ -25,7 +26,7 @@ func (service *Service) BucketName() string {
 }
 
 // NewService creates a new instance of a service.
-func NewService(connection portainer.Connection) (*Service, error) {
+func NewService(connection database.Connection) (*Service, error) {
 	err := connection.SetServiceName(BucketName)
 	if err != nil {
 		return nil, err